Soooooo my system boots fine, its just that I underclocked it instead of overclocking.

First time overclocking much!

Alright now for the important stuff. I have an Intel i7 6700k. My mobo is an Asus Z170-e. If you didn't get it before, I tried overclocking but screwed up. How bad? This bad:

CPU Default clock: 4.00Ghz

My "over"clock: 3.00Ghz

I don't even know what I did! I thought I changed back the only setting I touched in my BIOS after noticing the 3.00Ghz, but it didn't change (can't remember setting name).

Should I reset to default BIOS settings? That would be a pain since I have 4 hard drives (boot order stuff)

Is there a way to go back without defaulting? Probably not since I'm not much help here, and I don't even know what setting I changed.


  • Should I reset to default BIOS settings?... Well, unfortunately that would be the simplest solution... Good Luck Josh M.!! – Pimp Juice IT Jan 15 '17 at 6:54
  • Without knowing what setting you changed, its pretty tricky. Its probably a good idea to just note down the settings you have now and change it back – Journeyman Geek Jan 15 '17 at 7:37
  • I assume you've received the answer by now. But the curiousity is killing me: How did you manage to underclock an ASUS Z170-e? That's impossible, thanks to its intelligent O.C. system! – user477799 Jan 15 '17 at 8:02
  • You likely changed the voltage. You can use the overclocking tools provided by ASUS to restore the default configuration from within Windows. – Ramhound Jan 15 '17 at 11:25
  • @FleetCommand I figured out by now lol! My Multiplier was set to 30x and my BCLK was at 100MHz! Crazy, right? I fixed it by changing BCLK to 102.38 and multiplier to 42x for a solid 4.3GHz. – tycrek Jan 15 '17 at 19:35

Fixed it!

Turns out, I had changed the BCLK and while keeping the min/max CPU Cache ratios at Auto.

Before the switch, my system was 4.00GHz. After, it was 3.00GHz. This was my first time overclocking so I learned quite a bit!

My goal was 4.3GHz. After learning what BCLK actually was, I changed it's value to 102.38. Then, I changed my min/max CPU Cache ratio to 42. That successfully got me to 4.3GHz!

For those wanting to know how to get to a certain clock for the first time, here is some helpful tips.

The clock you want to reach will be 'C'. BCLK (known as Base Clock) will be 'b'. The min/max CPU Cache ratio (this is our multiplier) will be 'm'.

The equation is b * m = C. So, play around with the numbers (in a calculator!) and see what you need to reach your desired clock. So, for me, 102.38 * 42 = ~4300.

1GHz = 1000MHz. In turn, 102.38MHz multiplied by 42 is 4300MHz, which is 4.3GHz.

Hope this helps people in the future!

| improve this answer | |

Just reset the bios and fix the boot order, it only takes like 15 seconds. Also for overclocking high numbers tend to relate to a higher overclock. If you want to OC up the multiplayer

| improve this answer | |

You do not want to reset to default settings because of the boot order? Well, simply check the current boot order, write it down, reset to defaults and then simply put it back in again.

| improve this answer | |

Download Speedfan. Overclock back from this software.

| improve this answer | |
  • 2
    Very bad suggestion for an ASUS Z170-e. It has state of the art overclocking software bundled with it. – user477799 Jan 15 '17 at 8:05

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.